Massachusetts Financial Services
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Massachusetts Financial Services’s Lantheus LNTH Stock Holding History

Massachusetts Financial Services’s Portfolio LNTH Stock Details LNTH Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-6,586
Closed -$338K – 934
2025
Q3 		$338K Sell
6,586
-513,622
-99% -$32.1M ﹤0.01% 841
2025
Q2 		$42.6M Buy
520,208
+213,202
+69% +$18.7M 0.01% 500
2025
Q1 		$30M Sell
307,006
-16,894
-5% -$1.58M 0.01% 542
2024
Q4 		$29M Buy
323,900
+87,412
+37% +$8.51M 0.01% 549
2024
Q3 		$26M Buy
+236,488
New +$24.6M 0.01% 563
2019
Q4 		– Sell
-98,248
Closed -$2.46M – 822
2019
Q3 		$2.46M Buy
98,248
+10,988
+13% +$271K ﹤0.01% 704
2019
Q2 		$2.47M Buy
87,260
+12,192
+16% +$310K ﹤0.01% 710
2019
Q1 		$1.84M Buy
75,068
+2,796
+4% +$55.9K ﹤0.01% 729
2018
Q4 		$1.13M Buy
72,272
+5,638
+8% +$86.3K ﹤0.01% 762
2018
Q3 		$996K Sell
66,634
-143
-0.2% -$2.09K ﹤0.01% 791
2018
Q2 		$972K Buy
+66,777
New +$1.03M ﹤0.01% 776

Other funds holding LNTH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $17.5B AUM 50.95% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
RP
Reinhart Partners Mequon, Wisconsin $4.38B AUM 55.55% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Massachusetts Financial Services's LNTH Position: Q4 2025 in Review

Massachusetts Financial Services sold out of Lantheus (LNTH) in Q4 2025, closing a stake of 6,586 shares — an estimated $338K sold.

Massachusetts Financial Services first reported a position in LNTH in Q2 2018 and held it in 11 quarters. The position peaked at $42.6M in Q2 2025. 392 funds tracked by Wall St. Rank hold LNTH as of Q4 2025.

  • Massachusetts Financial Services reported no remaining Lantheus position as of Q4 2025 after selling out during the quarter.
  • Massachusetts Financial Services sold 6,586 Lantheus shares in Q4 2025, an estimated $338K.
  • Massachusetts Financial Services first reported a position in Lantheus in Q2 2018 and held it in 11 quarters.
  • Massachusetts Financial Services's Lantheus position peaked at $42.6M in Q2 2025.
  • 392 funds tracked by Wall St. Rank held Lantheus as of Q4 2025.

Based on Massachusetts Financial Services's 13F filing for Q4 2025, filed 22 Jan 2026.